Electromechanical system for regulation of speed and braking of electric motors. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the object of the main patent num .: 381.669 by: "electromechanical system for speed regulation and braking of electric motors" which is part of an electrical switch flexible mobile contacts that are fixed to a rotating part within a certain angle which receives movement of a control and performs the electrical switching in the initiation of its turning movement whose part also acts on a variable electrical resistance element, characterized in that said variable electrical resistance element is formed by a photoconductive cell, a source luminous, such as a neon lamp, located in front of the photoresist cell and an opaque screen arranged between both elements, mounted in a displaceable manner according to movement linked to that of the rotating part of the switch, whose screen has a perimeter slot suitable for allow a gradual variation of the section of the light beam emitted by the focus, and therefore received by the photoconductive cell, from zero to the maximum value, thereby obtaining a gradual variation of the resistance of the cell as a function of the position of the control, whose variable resistance circuit forms part of a suitable electronic power variation system, to which the motor is connected through the commutator. (Machine-translation by Google Translate, not legally binding)